<h1 class="main">My Sign In</h1>

<form action="FORM_ACTION" method="post">
  <dl>
    <dt>Username:</dt>
    <dd><input type="text" name="username"></dd>
    <dt>Password:</dt>
    <dd><input type="password" name="password"></dd>
  </dl>
  <input type="submit" name="authform" />
</form>

